Dear Bob,
I wish to thank you for promptly responding to the call from my daughter to wire the water heater installed by our plumber last Friday. Your employee, Beau, came as soon as they were complete and did the entire job very quickly and in a very workmanlike manner. Beau was a very pleasant man represents you in an outstanding manner.
You may use my name as a reference any time without calling me first. Thanks to you and the plumber, we had hot water for the weekend!
Sincerely,
Allan Miller